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Installation

1) Download here, at the bottom of the post
2)Extract
3)Find your minecraft.jar in the appdata folder, appdate\roaming for Vista/7
4)Open it with an archiver (Winrar/7zip)
5)Drag the files from the downloaded folder into the minecraft.jar
6)DELETE THE META-INF FOLDER
7)Save, close and play
Tuto from Heartviewhere